KABUL, March 19 (Xinhua) -- Three soldiers of the NATO-led Resolute Support coalition forces were injured on Sunday after an Afghan soldier opened fire on them in the country's southern province of Helmand, the coalition confirmed.
"The U.S. soldiers are receiving medical care," it twitted, saying further information will be shared with the media as appropriate.
The incident occurred at around mid-day in Washir district and the Afghan solider was killed in the exchange of fire, a local Afghan official told Xinhua.
Military officials have launched an investigation into the attack, he added.
No group has claimed responsibility for the incident so far but such incidents had also happened in the past.
On Oct. 19 last year, one U.S. soldier and a U.S. civilian were killed and three Americans wounded in a similar incident on the outskirts of Afghanistan's capital of Kabul.
